#docker-compose.yml

name: samba

services:
samba:
image: crazymax/samba
container_name: samba
volumes:
- "./samba:/data"
- "/media/wd_ultra:/share/wd_ultra"
...
networks:
- sambanet
environment:
- "TZ=Europe/Paris"
- "SAMBA_LOG_LEVEL=0"
- "SAMBA_FOLLOW_SYMLINKS=no"
restart: unless-stopped
...
networks:
sambanet:
driver: bridge

#samba/config.yml

auth:
  - user: user123
    group: group123
    uid: 123
    gid: 123
    password: 123

global:
  - "force user = user123"
  - "force group = group123"
  - "fruit:advertise_fullsync = true"

share:
  - name: NasUltra
    comment: Backups
    path: /share/wd_ultra
    browsable: yes
    readonly: no
    guestok: no
    veto: no
    validusers: user123
    writelist: user123
...